blindness

Between 12 and 16 percent of all adults (in America and Canada) are not blind but have difficulty seeing small objects especailly type. They are the readers of the large type book editions. The great majority of the people who have visual accessiblity problems with computers are NOT blind. The majority simply have what the medical profession describes as "low vision" or "limited vision." This is typically the situation where the individual has sight, but cannot discern small details or discriminate between letters of small fonts.